CN116905881A - Single-pipe tower first-order stepless variable-frequency variable-damping type eddy current single pendulum damper - Google Patents
Single-pipe tower first-order stepless variable-frequency variable-damping type eddy current single pendulum damper Download PDFInfo
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- CN116905881A CN116905881A CN202311034874.4A CN202311034874A CN116905881A CN 116905881 A CN116905881 A CN 116905881A CN 202311034874 A CN202311034874 A CN 202311034874A CN 116905881 A CN116905881 A CN 116905881A
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- type electric
- pendulum damper
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- 238000013016 damping Methods 0.000 title claims abstract description 55
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 71
- 239000010959 steel Substances 0.000 claims abstract description 71
- 230000000694 effects Effects 0.000 claims abstract description 8
- 230000004323 axial length Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims 1
- 230000009467 reduction Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/0215—Bearing, supporting or connecting constructions specially adapted for such buildings involving active or passive dynamic mass damping systems
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
- E04H9/0237—Structural braces with damping devices
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The application discloses a single-tube tower first-order stepless variable-frequency variable-damping type electric vortex simple pendulum damper which comprises a top plate, an outer cylinder, a swinging rod arranged in the outer cylinder and swinging along the top plate, wherein the swinging rod is connected with a mass block, and the single-tube tower first-order stepless variable-frequency variable-damping type electric vortex simple pendulum damper also comprises a magnetic steel component which generates damping effect with the mass block, and the magnetic steel component is longitudinally adjusted and positioned along the side wall of the outer cylinder through an adjusting and positioning component. The application is not only applicable to low-frequency and high-frequency vibration damping structures, but also can meet the vibration damping of single-tube towers with the frequency of 0.1HZ-50 HZ; the damper frequency and damping are externally and flexibly adjusted, the stepless adjustment can enable the adjustment resolution to be very high, and the effects of low stress and long service life are achieved.
Description
Technical Field
The application relates to the technical field of single-pipe communication tower vibration reduction, in particular to a single-pipe tower first-order stepless variable-frequency variable-damping type electric vortex single pendulum damper.
Background
The existing first-order eddy current damper technology for damping of the high-rise single-tube tower is a single-pendulum eddy current damper and a cantilever beam eddy current damper, the single-pendulum eddy current damper is only suitable for damping of a low-frequency tower, the pendulum length needs to be adjusted when the frequency is adjusted, the swing rod is particularly operated to be replaced by a longer or shorter swing rod, and the magnetic steel gap needs to be adjusted when the damping is adjusted. The cantilever beam eddy current damper can be suitable for high-frequency cantilever beam eddy current dampers, has the problems of larger stress at the root of the cantilever beam and short fatigue life, and is difficult to achieve ideal effects in practical application.
Disclosure of Invention
Aiming at the problems existing in the prior art, the application provides the single-tube tower first-order stepless variable-frequency variable-damping type electric vortex simple pendulum damper which can meet the frequency installation requirements on low-frequency and high-frequency single-tube towers, has a new scheme of flexibly adjusting the frequency and flexibly adjusting the damping, and has stronger fatigue life.
The technical scheme for realizing the aim of the application is as follows: the single-tube tower first-order stepless variable-frequency variable-damping type eddy current single pendulum damper comprises a top plate, an outer cylinder and a swing rod arranged in the outer cylinder and swinging along the top plate, wherein the swing rod is connected with a mass block and also comprises a magnetic steel component which generates a damping effect with the mass block, and the magnetic steel component is longitudinally adjusted and positioned along the side wall of the outer cylinder through an adjusting and positioning component.
Preferably, the magnetic steel component comprises a magnetic steel fixing plate and magnetic steel arranged on the magnetic steel fixing plate, and the magnetic steel on the magnetic steel fixing plate is longitudinally adjusted and positioned along the side wall of the outer cylinder through the adjusting and positioning component.
Preferably, the outer cylinder is provided with a longitudinal adjusting groove for longitudinally adjusting the adjusting and positioning assembly.
Preferably, the adjusting and positioning component is an adjusting bolt.
Preferably, the number of the magnetic steel is at least one, and the ring is positioned around the mass block.
Preferably, the magnetic steel fixing plate is formed and arranged according to a plurality of magnetic steel rings.
Preferably, the mass block is cylindrical.
Preferably, the top plate is connected to the mass block by a universal joint.
Preferably, the mass block is axially arranged along the outer cylinder, and the axial length of the mass block is greater than/equal to the longitudinal length of the longitudinal adjusting groove.
Preferably, when the swing angles of the swing rods are the same, the damping of the magnetic steel assembly at the lower end position is larger than that of the magnetic steel assembly at the upper end position.
By adopting the technical scheme, the application has the following beneficial effects: (1) The single-tube tower first-order stepless variable-frequency variable-damping type eddy current single pendulum damper can be suitable for low-frequency and high-frequency vibration reduction structures, and can meet the vibration reduction of single-tube towers with the frequency of 0.1HZ-50 HZ.
(2) The damper is flexible in frequency and damping external adjustment, and the stepless adjustment can enable the adjustment resolution to be very high.
(3) The foundation structure of the application is in a simple pendulum form, and has the effects of low stress and long service life compared with a cantilever structure.
Drawings
In order that the application may be more readily understood, a more particular description of the application will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, in which
FIG. 1 is a schematic view of a damper according to the present application;
FIG. 2 is a cross-sectional layout of a magnetic steel according to the present application;
fig. 3 is a perspective view of a damper of the present application.
Detailed Description
Example 1
The stepless frequency modulation damping principle of the single-tube tower first-order stepless variable frequency variable damping type electric vortex single pendulum damper is that magnetic steels are annularly arranged around a mass block, the magnetic steels are fixed on an outer cylinder of the damper and can be used for adjusting the height along the cylinder wall in a zero-motion mode, when the single pendulum swing amplitude is fixed, different magnetic steel arrangement positions enable the distance reaching the magnetic steels in the swing process of the mass block to be different, so that different suction forces and damping forces are generated, when the magnetic steels are arranged downwards, the suction force of the magnetic steels on the mass block is increased, the damping forces are also increased, and therefore the frequency of the damper is increased, and the damping ratio is increased; when the magnetic steel is arranged upwards, the suction force of the magnetic steel to the mass block is reduced, and the damping force is also reduced, so that the frequency of the damper is reduced, and the damping ratio is reduced.
Referring to fig. 1 to 3, the single-pipe tower first-order stepless variable-frequency variable-damping type electric vortex simple pendulum damper of the embodiment comprises a top plate 1, an outer cylinder 8 and a swinging rod 3 which is arranged in the outer cylinder and swings along the top plate, wherein the swinging rod is connected with a mass block 4 and further comprises a magnetic steel component which generates a damping effect with the mass block, and the magnetic steel component is longitudinally adjusted and positioned along the side wall of the outer cylinder through an adjusting and positioning component. The magnetic steel component comprises a magnetic steel fixing plate 7 and magnetic steel 5 arranged on the magnetic steel fixing plate, and a longitudinal adjusting groove 9 is arranged on the outer cylinder and used for enabling the adjusting and positioning component to longitudinally adjust. The magnetic steel on the magnetic steel fixing plate is longitudinally adjusted and positioned along the side wall of the outer cylinder through the adjusting and positioning assembly. The adjusting and positioning component is an adjusting bolt 6.
As shown in fig. 1, the universal joint 2, the swing rod 3 and the mass block 4 are connected and then hung on the top plate 1 to form a simple pendulum structure. The magnetic steel 5 and the magnetic steel fixing plate 7 form a magnetic steel assembly and are fixed on the outer cylinder 8 through the adjusting bolt 6.
As shown in fig. 2, the magnetic steel fixing plate 7 and the magnetic steel 5 form a magnetic steel assembly, the magnetic steel assembly is fixed on the outer cylinder 8 through the adjusting bolt 6, when the mass block 4 swings, the suction force on one side far away from the magnetic steel is reduced, the suction force on one side close to the magnetic steel is increased, and the speed of increasing the suction force is greater than the speed of decreasing the suction force, so that the mass block receives a force increasing along the moving direction, and the frequency of the mass block is increased. In the moving process, the magnetic flux of the magnetic steel passing through the mass block made of metal changes, so that a damping effect is generated.
As shown in fig. 3, the magnetic steel assembly is fixed on the outer cylinder 8 by an adjusting bolt 6, and the height position of the magnetic steel assembly can slide along the longitudinal adjusting groove of the outer cylinder and is screwed and fixed by the adjusting bolt.
The height adjustment schematic of the magnetic steel assembly is shown in fig. 1, and H1 is the adjustment position schematic.
The number of the magnetic steel is at least one, and the ring-shaped magnetic steel is positioned around the mass block. The magnetic steel fixing plates are formed and arranged according to a plurality of magnetic steel rings. The magnetic steel fixing plate is provided with a plurality of positioning holes for inserting, tightening and positioning the adjusting bolts. The mass block is cylindrical. The top plate is connected with the mass block through a universal joint 2. The mass blocks are axially arranged along the outer cylinder, and the axial length of the mass blocks is greater than/equal to the longitudinal length of the longitudinal adjusting groove. The proper height is convenient to longitudinally adjust.
When the swing angles of the swing rods are the same, the damping of the magnetic steel component at the lower end position is larger than that of the magnetic steel component at the upper end position.
When the swing angles of the swing rods are the same, the lower the adjusting position of the magnetic steel assembly is, the closer the mass block is to the magnetic steel assembly, the higher the frequency is, the larger the damping is, the higher the adjusting position of the magnetic steel assembly is, the lower the frequency is, the smaller the damping is, the position of the magnetic steel is adjusted along the groove, and therefore the frequency adjustment and the damping adjustment are both stepless adjustment.
While the foregoing is directed to embodiments of the present application, other and further details of the application may be had by the present application, it should be understood that the foregoing description is merely illustrative of the present application and that no limitations are intended to the scope of the application, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the application.
Claims (10)
1. The utility model provides a single pipe tower first order stepless frequency conversion becomes damping formula electric vortex simple pendulum attenuator which characterized in that: the damping device comprises a top plate (1), an outer cylinder (8) and a swing rod (3) arranged in the outer cylinder and swinging along the top plate, wherein the swing rod is connected with a mass block (4), and the damping device further comprises a magnetic steel component which has a damping effect with the mass block, and the magnetic steel component is longitudinally adjusted and positioned along the side wall of the outer cylinder through an adjusting and positioning component.
2. The single-pipe tower first-order stepless variable frequency variable damping type electric vortex single pendulum damper according to claim 1, wherein the single tower first-order stepless variable frequency variable damping type electric vortex single pendulum damper is characterized in that: the magnetic steel component comprises a magnetic steel fixing plate (7) and magnetic steel (5) arranged on the magnetic steel fixing plate, and the magnetic steel on the magnetic steel fixing plate is longitudinally adjusted and positioned along the side wall of the outer cylinder through the adjusting and positioning component.
3. The single-pipe tower first-order stepless variable frequency variable damping type electric vortex single pendulum damper according to claim 1, wherein the single tower first-order stepless variable frequency variable damping type electric vortex single pendulum damper is characterized in that: the outer cylinder is provided with a longitudinal adjusting groove (9) for longitudinally adjusting the adjusting and positioning assembly.
4. The single-pipe tower first-order stepless variable frequency variable damping type electric vortex single pendulum damper according to claim 1, wherein the single tower first-order stepless variable frequency variable damping type electric vortex single pendulum damper is characterized in that: the adjusting and positioning component is an adjusting bolt (6).
5. The single-pipe tower first-order stepless variable frequency variable damping type electric vortex single pendulum damper according to claim 2, wherein: the number of the magnetic steel is at least one, and the ring-shaped magnetic steel is positioned around the mass block.
6. The single-pipe tower first-order stepless variable frequency variable damping type electric vortex single pendulum damper according to claim 5, wherein the single tower first-order stepless variable frequency variable damping type electric vortex single pendulum damper is characterized in that: the magnetic steel fixing plates are formed and arranged according to a plurality of magnetic steel rings.
7. The single-pipe tower first-order stepless variable frequency variable damping type electric vortex single pendulum damper according to claim 1, wherein the single tower first-order stepless variable frequency variable damping type electric vortex single pendulum damper is characterized in that: the mass block is cylindrical.
8. The single-pipe tower first-order stepless variable frequency variable damping type electric vortex single pendulum damper according to claim 1, wherein the single tower first-order stepless variable frequency variable damping type electric vortex single pendulum damper is characterized in that: the top plate is connected with the mass block through a universal joint (2).
9. The single-pipe tower first-order stepless variable frequency variable damping type electric vortex single pendulum damper according to claim 1, wherein the single tower first-order stepless variable frequency variable damping type electric vortex single pendulum damper is characterized in that: the mass blocks are axially arranged along the outer cylinder, and the axial length of the mass blocks is greater than/equal to the longitudinal length of the longitudinal adjusting groove.
10. The single-pipe tower first-order stepless variable frequency variable damping type electric vortex single pendulum damper according to claim 1, wherein the single tower first-order stepless variable frequency variable damping type electric vortex single pendulum damper is characterized in that: when the swing angles of the swing rods are the same, the damping of the magnetic steel component at the lower end position is larger than that of the magnetic steel component at the upper end position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311034874.4A CN116905881A (en) | 2023-08-17 | 2023-08-17 | Single-pipe tower first-order stepless variable-frequency variable-damping type eddy current single pendulum damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311034874.4A CN116905881A (en) | 2023-08-17 | 2023-08-17 | Single-pipe tower first-order stepless variable-frequency variable-damping type eddy current single pendulum damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116905881A true CN116905881A (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311034874.4A Pending CN116905881A (en) | 2023-08-17 | 2023-08-17 | Single-pipe tower first-order stepless variable-frequency variable-damping type eddy current single pendulum damper |
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| CN (1) | CN116905881A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118166931A (en) * | 2024-04-16 | 2024-06-11 | 上海史狄尔建筑减震科技有限公司 | Frequency modulation mass damper with wide frequency domain stepless frequency conversion |
-
2023
- 2023-08-17 CN CN202311034874.4A patent/CN116905881A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118166931A (en) * | 2024-04-16 | 2024-06-11 | 上海史狄尔建筑减震科技有限公司 | Frequency modulation mass damper with wide frequency domain stepless frequency conversion |
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